B. Kuldeep

TL;DR: A novel approach for 2-channel linear phase quadrature mirror filter (QMF) bank design based on a hybrid of gradient based optimization and optimization of fractional derivative constraints is introduced, and it was found that the proposed method gives best result in terms of peak reconstruction error and transition band error while it is comparable in Terms of passband and stopband error.

TL;DR: An improved Exponential window is developed for designing M-channel cosine-modulated pseudo QMF banks by adding third parameter (ρ), which improves the spectral characteristic of a window in terms of smaller ripple ratio, wider main lobe width with improved side lobe roll-off ratio.

TL;DR: It was found that the proposed hybrid method based on the combination of a gradient- or slope-based optimization such as Lagrange multiplier method and nature-inspired optimization technique called cuckoo search optimization gives better performance than earlier existing techniques.

TL;DR: Comparative study and the simulation results reveal that the designed filter with CS gives better performance in terms of Maximum Stopband Ripple (MSR), and Stopband Attenuation (As) for low order filter design, and for higher order it also gives betterperformance in term of Maximum Pass Band Ripple (MPR).

TL;DR: In this article, an improved method based on fractional derivative constraints is presented for the design of two-channel quadrature mirror filter (QMF) bank with higher order filter taps.